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首页> 外文期刊>Science of advanced materials >Composite Stress Corrosion Cracking Damage Mechanism of Metal-Lined Fiber Hoop-Wrapped Composite Cylinders
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Composite Stress Corrosion Cracking Damage Mechanism of Metal-Lined Fiber Hoop-Wrapped Composite Cylinders

机译：金属衬纤维环包裹复合圆筒的复合应力腐蚀开裂损伤机理

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摘要

This study aims to investigate the stress corrosion cracking (SCC) damage propagation of the wound layer of metal-lined fiber hoop-wrapped composite cylinders by using a new multi-scale damage model, including macro and micro levels. The multi-scale model with an embedded cell includes a detailed microstructure of the composite. Scanning electron microscopy (SEM) is used to observe the SCC in the wound-layer composites and established the multi-scale model of the metal-lined fiber hoop-wrapped composite cylinder. Two numerical damage multi-scale models are used for the simulation of the damage evolution. Multi-scale research indicates that the metal-lined fiber hoop-wrapped cylinder winding layer crack will be extended along the axial and radial directions under the effect of stress corrosion, but priority will be extended in the axial direction. Moreover, these phenomena are in good agreement with what the SEM observed. Based on the microscopic study, we use the macroscale model to explore the effects of circumferential crack on the SCC propagation. This finding explains the propagation mechanism of the SCC on the wound layer of the cylinders by combining the method of observation and simulation.
机译：本研究旨在通过使用新的多尺度损伤模型，包括宏观和微观水平，研究金属衬里的纤维缠绕包裹的复合材料圆柱体的缠绕层的应力腐蚀开裂（SCC）损伤传播。具有嵌入式单元格的多尺度模型包括复合材料的详细微观结构。用扫描电子显微镜（SEM）观察缠绕层复合材料中的SCC，建立了金属衬里的纤维环包裹复合材料圆柱体的多尺度模型。两个数值损伤多尺度模型用于损伤演化的仿真。多尺度研究表明，在应力腐蚀的影响下，内衬金属纤维包裹的圆筒缠绕层的裂纹将沿轴向和径向扩展，但优先级将沿轴向扩展。此外，这些现象与SEM观察到的结果非常吻合。在微观研究的基础上，我们使用宏观模型来探索周向裂纹对SCC传播的影响。这一发现结合了观察和模拟方法，解释了SCC在圆柱体缠绕层上的传播机理。

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